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167 lines
3.4 KiB
JavaScript
167 lines
3.4 KiB
JavaScript
/*
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* Copyright DataStax, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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const util = require('util');
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/**
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* @classdesc
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* Represents a graph Element.
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* @param id
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* @param label
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* @abstract
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* @memberOf module:datastax/graph
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* @constructor
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*/
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function Element(id, label) {
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/**
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* Gets the element id.
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*/
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this.id = id;
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/**
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* Gets the element label.
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* @type {String}
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*/
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this.label = label;
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}
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/**
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* @classdesc
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* Represents a graph Vertex.
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* @param id
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* @param {String} label
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* @param {Object<string, Array>} properties
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* @extends {Element}
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* @memberOf module:datastax/graph
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* @constructor
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*/
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function Vertex(id, label, properties) {
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Element.call(this, id, label);
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/**
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* Gets the vertex properties.
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* @type {Object<string, Array>}
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*/
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this.properties = properties;
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}
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util.inherits(Vertex, Element);
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/**
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* @classdesc
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* Represents a graph Edge.
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* @param id
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* @param outV
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* @param {outVLabel} outVLabel
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* @param {String} label
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* @param inV
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* @param {String} inVLabel
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* @param {Object<string, Property>} properties
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* @extends {Element}
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* @memberOf module:datastax/graph
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* @constructor
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*/
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function Edge(id, outV, outVLabel, label, inV, inVLabel, properties) {
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Element.call(this, id, label);
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/**
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* Gets the id of outgoing vertex of the edge.
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*/
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this.outV = outV;
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/**
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* Gets the label of the outgoing vertex.
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*/
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this.outVLabel = outVLabel;
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/**
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* Gets the id of the incoming vertex of the edge.
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*/
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this.inV = inV;
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/**
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* Gets the label of the incoming vertex.
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*/
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this.inVLabel = inVLabel;
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/**
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* Gets the properties of the edge as an associative array.
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* @type {Object}
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*/
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this.properties = {};
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(function adaptProperties(self) {
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if (properties) {
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const keys = Object.keys(properties);
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for (let i = 0; i < keys.length; i++) {
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const k = keys[i];
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self.properties[k] = properties[k].value;
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}
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}
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})(this);
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}
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util.inherits(Edge, Element);
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/**
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* @classdesc
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* Represents a graph vertex property.
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* @param id
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* @param {String} label
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* @param value
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* @param {Object} properties
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* @extends {Element}
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* @memberOf module:datastax/graph
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* @constructor
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*/
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function VertexProperty(id, label, value, properties) {
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Element.call(this, id, label);
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this.value = value;
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this.key = this.label;
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this.properties = properties;
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}
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util.inherits(VertexProperty, Element);
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/**
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* @classdesc
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* Represents a property.
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* @param key
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* @param value
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* @memberOf module:datastax/graph
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* @constructor
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*/
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function Property(key, value) {
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this.key = key;
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this.value = value;
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}
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/**
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* @classdesc
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* Represents a walk through a graph as defined by a traversal.
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* @param {Array} labels
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* @param {Array} objects
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* @memberOf module:datastax/graph
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* @constructor
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*/
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function Path(labels, objects) {
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this.labels = labels;
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this.objects = objects;
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}
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module.exports = {
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Edge,
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Element,
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Path,
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Property,
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Vertex,
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VertexProperty
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}; |